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Tension or Temperature. Dogs may shake as a way of relieving tension. If a dog is feeling nervous or uncomfortable in a situation, it might shake the whole body as a way of shaking out tension. This behavior also may function as a means of getting attention from other dogs or people.
When to See a Vet. Dogs shake and tremble for all kinds of reasons -- excitement, pain, old age, even nausea. Shivering and trembling may be symptoms of something serious -- like poisoning, kidney disease, or injury.So, if your dog suddenly starts trembling or shivering, it's important to take note of other symptoms such as diarrhea, vomiting, or limping.Then talk to your vet right away.hen to See a Vet. Dogs shake and tremble for all kinds of reasons -- excitement, pain, old age, even nausea. Shivering and trembling may be symptoms of something serious -- like poisoning, kidney disease, or injury.